Why does my Mac computer take longer to boot after I upgraded it with JetDrive SSD? Category : Setup / Operation After upgrading your Mac with JetDrive SSD, please reset the "Start up Disk" by the following steps:1. Find "System Preferences"2. Click "Start up Disk"3. Unlock and set the disk you would like to use as start up disk 4. Reboot Is the answer helpful? Related Is there any way that I can clone my Mac OS to JetDrive SSD? I installed Windows 10 with BootCamp but the OS would not recognize the enclosure. Can I install Win10 for my JDM820/825/850/855 through BootCamp? Technical Support If the answer can't help you, you can contact the Tech Support Department Get Started